/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.dolphinscheduler.server.worker.metrics;


import org.apache.dolphinscheduler.plugin.task.api.TaskChannelFactory;

import java.util.HashMap;
import java.util.Map;
import java.util.ServiceLoader;

import io.micrometer.core.instrument.Counter;
import io.micrometer.core.instrument.Metrics;
import lombok.experimental.UtilityClass;

@UtilityClass
public class TaskMetrics {

  private final Map<String, Counter> taskTypeExecutionCounter = new HashMap<>();
  private final Counter taskUnknownTypeExecutionCounter =
      Counter.builder("ds.task.execution.count.by.type")
          .tag("task_type", "unknown")
          .description("task execution counter by type")
          .register(Metrics.globalRegistry);

  static {
    for (TaskChannelFactory taskChannelFactory : ServiceLoader.load(TaskChannelFactory.class)) {
      taskTypeExecutionCounter.put(
          taskChannelFactory.getName(),
          Counter.builder("ds.task.execution.count.by.type")
              .tag("task_type", taskChannelFactory.getName())
              .description("task execution counter by type")
              .register(Metrics.globalRegistry)
      );
    }
  }

  public void incrTaskTypeExecuteCount(String taskType) {
    taskTypeExecutionCounter.getOrDefault(taskType, taskUnknownTypeExecutionCounter).increment();
  }

}
